John p



(No Model.) J. P. SUVERKROP.

TUBE 0R PIPE STOPPER FOR ARTESIAN 0R DRIVEN WELLS.

No. 546,258. Patented Sept. 10, 1895.

CL S S E V W W A TTOHNE Y UNI-TED:ESTATES' 'PATENT .rFicE. j

JOHN P. suvnnxnor, on sos'reiwmhssnonusn'rrs,AssIeNoR' TO BENJAMIN F. snr'rnjnnn en-AnL s o. sn rn, or SAME PLACE.-

TUBE OR PiPEs ro PER FOR. ARTESIAN'ORIDRWEN WELLS.

Application filed March 14, 1395.

To all ivhom it mag concern} Be it known that I, JOHN P. Swamp,

a citizen of the United States, residing at Boston, in the county .of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tube or'Pipe Stoppers for Artesi'an or Dri-ven Wells, of which the following is a specification, reference being had therein to the accompanying 0. i

drawings. I

My invention relates to removable tube and pipe stoppers or plugs as applied to Artesian or driven wells for water, oil, or gas.

The objects of my-invention are,'first, to provide a device over which may he slipped,

. whileit-is in operation, pipe threading and out the several views.

device is fixed in its proper position without interfering with the operations mentioned in j the firstplace; fourth, the construction of such a pipe-stopping device as will be capable of withstanding the great pressures found in flowing water,.oil, or gas wel1s,and which device may be readily removedand used separately forsimilarpurposes. I attain these resultsby the mechanism illustrated in-Ithe accompanying drawings, in which- Figure lis a vertical section, of the pipe .or well, showing, my de'vice inside it, but'not in operation. Fig. 2 is a section of the same pipe, showing my invention expanded and ready for use. Figs. 3 and i are sectional.

views on a larger scale, shgwing the working parts of the device in 'deihi lfFig. 3 showing the device in' its normal condition, as also shown in Fig. 1, and Fig. A showing it ex panded and in working operation, as in Fig. 2." Similar letters referto similar parts through M is a. section of an Artesian or driven well, usually made of wrought-iron pipe, in which it is desired tostop the flow of water, gas, or

, oil, so that the pipe Minay be cut ofi, threaded,

STEGIFICATION forming partof Letters Patent No. 546,258, dated September 10, 1895.

Serial No. 641,817. (No model.)

or fittings, such as couplings, s, crosses;

(he, affixed to-it at any point between its upper end and the point where the device is fixed without interference from the flow of water, oil, or gas. a

A is the exterior tubeof the device, to which is tightly attached at itsupper end the collar C. At the-lower end of the exterior-tube A is fixed the collar 1). To the interior-oi the collar D is brazed or otherwise suitably affixed the sleeve L, preferably made of a piece of brass tube longitudinallyspl-it atregu-lar distances apart from the bottom to its junction' with the collar 1D. The longitudinal splitting is to allow for its lateral expansion. Then. splitsleeve L is exteriorly surrounded by an elastic sleeve E, preferably made of india-rubber, which is' held in place by the collar D at its upper end and by the outwardlyturned ends'ofthesleeveL at its lower end.

B is the interior tubeof my device open at both ends, fitting loosely within the exterior tube A. It has fitted to its upper end the stop-cock F and to its lower end the cone' K.

The upper portion oflthe. interior tube Bis exteriorly threaded to lit the revoluble femalethr'eaded sleeve-nut G. Between the sleevenut G and the collar 0 is interposed the loosely-fitting washer H.

I is a conical cap divided'longitudinally in two parts to slip into the top of the well M and around the exterior tube A to keep the tube A'in place and in a central position within the well M. Fig. 1 shows-a section of the well M with the device almost lowered into position.

Fig. 3 shows the working parts on a large scale and is entirely in section,

showing my invention lowered into position,

but not in'operation. It will be seen that the sleeve-nut G is at the upper end of the exteriorthread on the interior tube B, while the cone K is considerably below and does not enter the lower end of the split sleeve L, while l the-stop-cock F being open the gas, water, or other fluid may escape, as shown by the upwardly-pointing arrows in Fig. Figs. 2 and 4 show the elastic sleeve E expanded and the stop-cock F turned so as to prevent the 'escap of gas, water, or oil from the well M.-

" The'operation of my device is as follows:

After inserting theparts K E and a portionof the exterior tube A into the well M the split cap I is placed in position in the top of well M and the device lowered until the collar cone K, which enters and expands the split sleeve L and the elastic sleeve E until the elastic sleeve E is forced tightly against the interior surface of the Well M, thus efifectually stopping the egress of water, air, or

I gas from the well M, except through the interior tube B, which in turn may beclosed by the stop-cock F. Upon rotating the sleevenut G in the opposite direction, the cone K is withdrawn from the split sleeve L and the elastic sleeve E, which then assume their normal position and shape.

By inspection itwill be seen that all parts of the device are less in diameter than the well M, thus allowing the Well M to be out 01f or threaded at any point above the elastic sleeve E, While fittings, such as couplings, Ts, crosses, 850., may also be applied to the well It will also be seen from the relative position of the cone K and the elastic sleeve E that the internal pressure in the well M tends to force the cone K upwardly, thus making the elastic sleeve E fit more tightly to the interior surface of the well M.

I am aware that prior to my invention soilpipe stoppers have been made in which a section of rubber tube is longitudinally compressed, in order to test the tightness of the joints in the pipe, and also that wooden stoppers have been used into which a conical plug is driven from the top, in order to expand said wooden stopper. I therefore do not claim such a combination broadly.

What I do claim as my invention, and desire to secure by Letters Patent, is-

1. The combination in a pipe or tube stopper of the pipes A and B with the stopcock F, the sleeve nut G, the split cap I, the elastic sleeve E and the cone K, all of 'less diameter than the pipe or tube to be stopped-substantially as set forth.

2. In a pipe or tube stopper the combination of a pipe A with the collar 0, the collar"D and the split sleeve L,.substantially as described.

3. The combination in a tube or pipe stopper of a conical plug 1 with the longitudinally split sleeve L and the elastic sleeve E, all substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses. r

JOHN P. SUVERKROP.

Witnesses:

CHAS. KIRKPATRICK, A. M. PEASLEE. 

